Fix crash when viewing installed app details page

Change-Id: I6b4f644d5208c8ac0254bcc8348b87575c431c06
diff --git a/res/layout/installed_app_details.xml b/res/layout/installed_app_details.xml
index 5dae07e..7829596 100644
--- a/res/layout/installed_app_details.xml
+++ b/res/layout/installed_app_details.xml
@@ -413,6 +413,8 @@
                 android:layout_height="match_parent"
                 android:orientation="vertical">
                 <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
                     android:text="@string/security_settings_premium_sms_desc" />
                 <Spinner
                     android:id="@+id/security_settings_premium_sms_list"